Gold immersion PCB: 1) Material: FR-4 2) Board thickness: 1.6mm 3) High quality. CE, UL, ROHS approved. Specification: Service:Offer PCB layout design, BOM list, and PCB schematic diagram. PCB copy, design and PCB modify. Be good at complex and multilayer PCB copy with 18 layers lines.Using all related software to cater to different customers.Using high precision scanner, reach 99% accuracy.